JP6101016B2 - Rotation transmission device - Google Patents

Description

  The present invention relates to a rotation transmission device, and relates to a rotation transmission device that couples two rotatable members to transmit rotation to each other, and can allow inclination, center misalignment, and shaft misalignment of each of the members to be coupled.

Conventionally, when two rotatable members are connected to transmit rotation to each other, for example, when extending the rotating shaft or connecting another rotating element to the end of the rotating shaft, various types of rotation transmission The device is being used. Such a rotation transmission device is also called a shaft coupling, a joint, or a coupling.
In such a rotation transmission device, as a basic function, it is required to transmit a rotational force and a rotation angle position between two connected rotating members. Furthermore, when applied to a high-precision rotating mechanism such as a roundness measuring machine, it is required that tilt, misalignment, and misalignment between the rotation axes can be allowed.

In the roundness measuring machine, in order to measure the roundness of the outer periphery of the workpiece with high accuracy, the rotational accuracy of the table on which the workpiece is placed is increased. In order to rotate such a table, a drive shaft for transmitting rotational force is connected.
Here, between the table side and the drive shaft, there is an inclination (declination, inclination of each rotation center axis), misalignment (eccentricity, deviation of each rotation center axis in the axis crossing direction), axis deviation (each The axial deviation of the rotation center axis of the shaft and the advance and retreat of the shaft are inevitable.
If such tilt, misalignment, and shaft misalignment are directly transmitted from the drive shaft to the table, the rotation accuracy of the table may be affected.

  Various rotation transmission devices (universal joints, flexible joints, or flexible couplings) that can alleviate or absorb the above-described inclination, misalignment, and axial misalignment have been proposed.

  Patent Document 1 is a so-called disk-type rotation transmission device. When connecting a pair of coaxially arranged rotation shafts, a rotation is transmitted by interposing a disk member orthogonal to each rotation shaft. . Then, the tilt of each rotating shaft and the deviation in the axial direction are allowed using the deformation of the disk. However, since the center position of each rotating shaft is fixed with respect to the disk member, it is difficult to cope with misalignment.

  Patent Document 2 is a so-called cross-joint type rotation transmission device. When connecting a pair of coaxially arranged rotating shafts, two connecting pins arranged orthogonal to each rotating shaft and crossing each other The rotation is transmitted by interposing. Then, the tilt of the rotating shaft is allowed by turning around the two pins in the intersecting direction, and the misalignment of the rotating shaft is allowed by displacing in the longitudinal direction along each pin. However, since it cannot be displaced in the direction along the rotation axis, it is difficult to cope with the axial deviation.

  Patent Document 3 is a so-called Oldham-type rotation transmission device, in which two sets of slide structures composed of ridges and grooves extending in the direction of rotation axis crossing are combined in the direction of crossing to transmit rotation. . Then, each slide structure is displaced in the longitudinal direction to allow misalignment of each rotation shaft, and each slide structure is allowed to be inclined so that the ridges and grooves are inclined, so that each rotation shaft is allowed to tilt. Further, the axial displacement is allowed by the displacement of the ridges and the grooves of each slide structure in the axial direction.

JP 2010-203469 A JP 2008-208952 A Utility Model Registration No. 2512843

As described above, the conventional rotation transmission device is characterized by the tolerance for the inclination, misalignment, and misalignment of the rotation shaft.
Of these, those having sufficient tolerance for the inclination, misalignment, and misalignment of the rotation shaft can be said to be Oldham type rotation transmission devices.
Here, even in the disk type, it is possible to allow misalignment of the two rotating shafts connected as the rotation transmitting device by using two disks and tilting the intermediate rotating axis.
However, in this type of misalignment handling by the two-disc type, each disk is deformed to tilt the rotation axis, and if an attempt is made to ensure a sufficient tolerance for misalignment, the disk diameter becomes excessive and rotation transmission The size of the apparatus is increased, and the maximum transmission torque and the angular position accuracy of the rotation transmission apparatus are reduced by increasing the deformation performance of the disk.
Therefore, the disk type is practically difficult to adopt for applications that allow misalignment.
On the other hand, in the cross joint type, since there are two pins in the direction intersecting with the rotation axis, the axial displacement cannot be allowed structurally.
As described above, in the disk type and the cross joint type, sufficient tolerance cannot be obtained for each of the inclination, the misalignment, and the misalignment of the rotation axis.
On the other hand, in the Oldham type rotation transmission device, sufficient tolerance can be obtained for each of the inclination, misalignment, and misalignment of the rotation shaft.

However, the Oldham type rotation transmission device has some problems regarding rotation transmission accuracy.
That is, the Oldham-type rotation transmission device transmits rotation by combining two sets of slide structures each composed of a ridge and a groove extending in the direction intersecting the rotation axis and combining each other in the direction intersecting each other.
In this slide structure, ridges and grooves that are slidable in the longitudinal direction are fitted to each other, and a mutual fitting gap is necessary for assembly, and a predetermined gap is also necessary for sliding. It is.
Due to such a gap, in the Oldham type rotation transmission device, backlash occurs in the rotation transmission, and the accuracy of the rotation angle position cannot be avoided.

Here, Patent Document 3 describes that a ball is interposed between the ridges and the grooves that form the slide structure to relieve the sliding resistance between the ridges and the grooves.
By interposing such a ball, there is a possibility that the gap between the ridge and the groove and the backlash caused by this gap may be reduced.
However, in such a slide structure in which a ball is interposed, it is necessary to fit the ridge and the groove with the ball interposed during assembly, and the assembly gap including the ball cannot be eliminated.
Here, with the slide structure in which the ball is interposed, it is conceivable that the ball is elastically supported and the assembly gap is filled with the ball. When the elastically supported ball transmits a torque exceeding a certain level, This is not sufficient in terms of eliminating backlash that affects the accuracy of rotation transmission.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a rotation transmission device capable of sufficiently obtaining the inclination of the rotation axis, misalignment and misalignment and avoiding backlash of rotation transmission.

The present invention is a rotation transmission device that couples a pair of rotating members that rotate about the same rotation axis, and includes a slide mechanism that is displaceable in a predetermined sliding direction that intersects the rotation axis, and the slide The mechanism includes a pair of guide surfaces extending in the slide direction and along the rotation axis direction, a pair of sliders movable in the slide direction while being in contact with the guide surfaces, and a support body supporting the slider, And at least one of the pair of sliders is capable of adjusting the position of the slider in the direction toward the guide surface with respect to the support, and adjusting the position so that the slider can be fixed to the support at the adjusted position. have a mechanism, the position adjusting mechanism, the has an eccentric shaft which can be fixed extends in the rotation axis in the same direction and at an arbitrary rotation angle to the support, the slider the A structure supported by a mandrel, a long hole formed in the support body and extending in a direction toward the guide surface, and a support shaft that supports the slider and can be fixed at a predetermined position along the long hole. A movable block that supports the slider and is movable in a direction toward the guide surface, and a fixing bolt that can fix the movable block to the support. .
In the present invention, it is desirable that two sets of the slide mechanisms are arranged such that the slide directions are crossing each other.

In the present invention, a slide mechanism that is displaceable in the slide direction intersecting the rotation axis is configured by arranging the pair of the guide surface and the slider extending in the slide direction in opposite directions (opposite arrangement or back to back). The Then, by arranging two sets of such slide mechanisms so that the respective slide directions are intersecting directions, a so-called Oldham type rotation transmission device is configured.
Here, the slide mechanism of the present invention can adjust the position of the slider with respect to the guide surface by the position adjustment mechanism. For this reason, it is possible to adjust the gap generated between the guide surface and the slider to be large so that the gap can be made smooth during assembly, and the gap can be substantially eliminated after assembly.
As a result, as the basic functions of the Oldham type rotation transmission device, the tolerance of the tilt, misalignment, and misalignment of the rotating shaft is sufficiently obtained, and the position adjustment mechanism installed in the slide mechanism allows the guide surface and the slider to move. A gap between them can be substantially eliminated, and backlash of rotation transmission can be avoided.

In the present invention, it is preferable that each of the sliders has a rolling element that rolls on the guide surface, and at least one of the pair of sliders includes a plurality of rolling elements arranged in the sliding direction.
In the present invention, the gap between the pair of guide surfaces and the slider constituting the slide mechanism is substantially eliminated, so that there is a possibility that resistance is generated in the movement of the slider along the guide surface. By using the contact via the slider, the movement of the slider along the guide surface can be made smooth, the operation resistance during rotation transmission can be further reduced, and the operation accuracy can be kept high.
At this time, a slide mechanism that can follow the direction of the guide surface by using at least one of the sliders as an array of a plurality of rolling elements in the sliding direction and can be accurately displaced in the sliding direction while using the rolling elements. Function can be ensured.

In the present invention, the pair of guide surfaces are preferably formed on both side surfaces of a ridge extending in the sliding direction, and the pair of sliders are disposed to face each other so as to sandwich the ridge from both sides.
In the present invention, the slide structure can be formed by the convex strip and the pair of sliders sandwiching the convex strip, and the pair of guide surfaces can be realized with a simple configuration using both side surfaces of the convex strip, and the slider Therefore, the slider position can be adjusted easily and reliably outside the ridge.

The perspective view which shows 1st Embodiment of this invention. FIG. 3 is an exploded perspective view showing the first embodiment. The disassembled perspective view which shows the principal part of the said 1st Embodiment. The disassembled perspective view which shows 2nd Embodiment of this invention. The disassembled perspective view which shows 3rd Embodiment of this invention. The disassembled perspective view which shows 4th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
1 to 3 show a first embodiment of the present invention.
In FIG. 1, a rotation transmission device 10 of the present embodiment connects a pair of rotating members 1 and 2 that rotate about the same rotation axis.
Examples of the rotating members 1 and 2 include a rotating shaft of a loading table of a roundness measuring machine and a driving shaft that rotationally drives the rotating shaft. Alternatively, it may be a rotation transmission part of another measuring machine or a rotation transmission part of a device other than the measuring machine, and the rotating member 1 is a pair of rotating members that are required to have an angular position accuracy while transmitting a predetermined torque. , 2

  As shown also in FIG. 2, the rotation transmission device 10 includes a first member 11 connected to the rotating member 1, a second member 12 connected to the rotating member 2, and the first member 11 and the second member. And an intermediate member 13 installed between the two.

The first member 11 has a rectangular block-shaped main body 110, and a collar 111 for fixing the rotating member 1 is formed on one surface thereof. Attachment holes 112 are formed at the four corners on the other surface of the main body 110, and rollers 114 that are rolling elements are supported by the attachment holes 112 via support shafts 113. The roller 114 is rotatable about an axis parallel to the common rotation axis of the rotation members 1 and 2 with respect to the support shaft 113.
In the first member 11, the first side slider 21 is constituted by two of the four rollers 114, and the second side slider 22 is constituted by the other two, and these sliders 21, 22 are The first member 11 is disposed to face each other on the surface on the intermediate member 13 side.

The second member 12 is arranged upside down in FIG. 2, but is the same as the first member 11 described above, the same main body 120 as the first member 11, a collar 121 for fixing the rotating member 2, A mounting hole 122, a support shaft 123, and a roller 124 are provided.
In the second member 12, the first side slider 23 is constituted by two of the four rollers 124, and the second side slider 24 is constituted by the other two, and these sliders 23, 24 are The second member 12 is disposed so as to face each other on the surface of the intermediate member 13 side.
In the present embodiment, the first member 11 and the second member 12 constitute a support that supports the sliders 21 and 22.

The sliders 21 and 22 of the first member 11 and the sliders 23 and 24 of the second member 12 are provided with a position adjusting mechanism 40 for adjusting the positions of the rollers 114 and 124.
As shown in FIG. 3, the rollers 114 and 124 are rotatably supported by support shafts 113 and 123. The support shafts 113 and 123 are fixed shaft portions 41 fixed to the main bodies 110 and 120 of the first member 11 or the second member 12, and hubs that are disposed on the inner periphery of the rollers 114 and 124 and rotatably support them. Part 42.

Here, the fixed shaft portion 41 and the hub portion 42 are eccentrically connected to each other, and the center axis C1 of the fixed shaft portion 41 and the center axis C2 of the hub portion 42 are shifted by a predetermined eccentric amount D. Reference numeral 42 denotes an eccentric shaft with respect to the fixed shaft portion 41.
For this reason, by inserting the fixed shaft portion 41 into the mounting holes 112 and 122 of the main bodies 110 and 120 and rotating the fixed shaft portion 41, the hub portion 42 and its central axis C2 rotate around the central axis C1. . By such an eccentric movement, the center axis C2 of the hub portion 42 can be adjusted with respect to the main bodies 110 and 120 by an adjustment amount A corresponding to the maximum displacement 2D.
Furthermore, a fixing cap bolt or the like is installed at the end of the fixed shaft portion 41, and the main body can be secured by tightening the cap bolt or the like while the fixed shaft portion 41 is inserted into the mounting holes 112 and 122 of the main bodies 110 and 120. The fixed shaft portion 41 can be fixed to the 110 and 120 at an arbitrary rotation angle.

  The fixed shaft portion 41 and the hub portion 42 constitute a position adjusting mechanism 40, and the sliders 21 and 22 of the first member 11 and the sliders 23 and 24 of the second member 12 are operated by operating the position adjusting mechanism 40. The rollers 114 and 124 can be moved close to or separated from guide surfaces 31 to 34 of the intermediate member 13 described later, and can be fixed at an arbitrary position.

Returning to FIG. 2, the intermediate member 13 has a rectangular block-shaped main body 130, and a first protrusion 131 is formed on one surface thereof (the surface on the first member 11 side, the upper side in FIG. 2). A second protrusion 132 is formed on the other surface (the surface on the second member 12 side, the lower side in FIG. 2).
The first ridge 131 extends in a direction (first sliding direction) that intersects the common rotation axis of the rotating members 1 and 2.
The second ridge 132 extends in a direction (second sliding direction) that intersects the common rotation axis of the rotating members 1 and 2 and also intersects the first ridge 131.

In the intermediate member 13, a pair of guide surfaces 31 and 32 are formed on both side surfaces of the first ridge 131, and a pair of guide surfaces 33 and 34 are formed on both sides of the second ridge 132. Is formed.
The guide surfaces 31 and 32 are formed parallel to each other back to back, and are finished to high-precision planes extending along the first sliding direction and the common rotation axis direction of the rotating members 1 and 2, respectively.
The guide surfaces 33 and 34 are formed parallel to each other back to back, and are finished to high-precision planes extending along the second slide direction and the common rotation axis direction of the rotating members 1 and 2, respectively.

The first member 11, the second member 12, and the intermediate member 13 as described above are assembled as shown in FIG.
At this time, the first slide mechanism 14 is formed between the first member 11 and the intermediate member 13 by the sliders 21 and 22 and the guide surfaces 31 and 32.
A second slide mechanism 15 is formed between the second member 12 and the intermediate member 13 by the sliders 23 and 24 and the guide surfaces 33 and 34.

In the first slide mechanism 14, the sliders 21 and 22 of the first member 11 are disposed with the first protrusion 131 of the intermediate member 13 interposed therebetween. The two rollers 114 of the slider 21 on the first side are in contact with the guide surface 31, and the two rollers 114 of the slider 22 on the second side are in contact with the guide surface 32, and the rollers 114 on each side are It can roll smoothly along the guide surfaces 31 and 32.
Therefore, the first member 11 and the intermediate member 13 connected via the first slide mechanism 14 can be displaced from each other in the first slide direction by the first slide mechanism 14.

Similarly, in the second slide mechanism 15, the sliders 23 and 24 of the second member 12 are arranged with the second protrusion 132 of the intermediate member 13 interposed therebetween.
The second member 12 and the intermediate member 13 connected via the second slide mechanism 15 can be displaced from each other in the second slide direction by the second slide mechanism 15.

  In the first and second slide mechanisms 14 and 15, the rollers 114 and 124 of the sliders 21 to 24 are rotatable around an axis parallel to the common rotation axis of the rotating members 1 and 2, and the guide surface 31. , 32 smoothly rolls in the first slide direction or the second slide direction, and slides along the guide surfaces 31 and 32 with frictional resistance, so that the guide surfaces 31 and 32 are moved. Thus, the rotary members 1 and 2 can be displaced in the direction along the common rotation axis.

  Furthermore, in this embodiment, when the sliders 21 and 22 are brought into contact with the guide surfaces 31 and 32 in the first slide mechanism 14, and the sliders 23 and 24 are brought into the guide surfaces 33 and 34 in the second slide mechanism 15. At the time of contact, adjustment is performed by the position adjusting mechanisms 40 respectively installed on the sliders 21 to 24 so as to remove the gaps between the sliders 21 to 24 and the guide surfaces 31 to 34.

For example, in the first slide mechanism 14, the position adjustment mechanism 40 of the slider 22 is first fixed, and then the roller 114 of the slider 22 is brought into close contact with the guide surface 32. Next, the position adjusting mechanism 40 of the slider 21 is moved, that is, the position can be adjusted, and the roller 114 of the slider 21 is brought into close contact with the guide surface 31. By fixing the position adjusting mechanism 40 of the slider 21 in this state, the sliders 21 and 22 and the guide surfaces 31 and 32 are in close contact with each other, and are adjusted so that there is no gap.
Further, in the first slide mechanism 15, the sliders 23 and 24 and the guide surfaces 33 and 34 are in close contact with each other by the same adjustment of the position adjustment mechanism 40, and are adjusted to have no gap.

In this embodiment, the rotation transmission device 10 can ensure a function as a so-called Oldham type rotation transmission device by the two sets of slide mechanisms 14 and 15.
That is, the first slide mechanism 14 and the second slide mechanism 15 arranged in the intersecting direction can allow misalignment, shaft misalignment, and shaft tilt between the rotating members 1 and 2.
Furthermore, in the first slide mechanism 14 and the second slide mechanism 15 of the present embodiment, the sliders 21 to 24 and the guide surfaces 31 to 31 are assembled at the time of assembly by the position adjusting mechanism 40 installed on the sliders 21 to 24. As a result, the gap between the sliders 21 to 24 and the guide surfaces 31 to 34 can be adjusted to be removed after the assembly.
As a result, according to the rotation transmission device 10 of the present embodiment, as the basic functions of the Oldham type rotation transmission device, the tilt of the rotation shaft, the misalignment, and the tolerance of the shaft displacement are sufficiently obtained, and the slide mechanism 14, 15, the gap between the sliders 21 to 24 and the guide surfaces 31 to 34 can be substantially eliminated, and backlash of rotation transmission can be avoided.

In the present embodiment, the sliders 21 to 24 move along the guide surfaces 31 to 34 by substantially eliminating gaps between the sliders 21 to 24 constituting the slide mechanisms 14 and 15 and the guide surfaces 31 to 34. However, by making contact via the rollers 114 and 124 that are rolling elements, the movement of the sliders 21 to 24 along the guide surfaces 31 to 34 can be made smooth. The operating resistance during rotation transmission can be further reduced, and the operating accuracy can be maintained high.
Furthermore, the sliders 21 to 24 are arranged in the slide direction by a plurality of rollers 114 and 124, respectively, and can follow the directions of the guide surfaces 31 to 34 and can be accurately displaced in the slide direction. Function can be ensured.

  In the present embodiment, when the first and second slide mechanisms 14 and 15 are configured by the sliders 21 to 24 and the guide surfaces 31 to 34, the first and second protrusions 131 and 132 formed on the intermediate member 13 are used. Since the first member 11 and the second member 12 are provided for the pair of sliders 21 to 24 sandwiching the pair, and the sliders 21 to 24 are arranged to sandwich the protrusions 131 and 132, the pair of guide surfaces 31 to 34 are formed. It can be realized with a simple configuration using both side surfaces of the ridges 131 and 132, and the position adjustment of the sliders 21 to 24 can be easily and reliably performed outside the ridges 131 and 132.

  In the present embodiment, as the position adjusting mechanism 40, the support shafts 113 and 123 that support the rollers 114 and 124 are formed with the fixed shaft portion 41 and the hub portion 42 serving as eccentric shafts, and the rollers 114 and 124 are rotated by rotating them. 124, that is, the sliders 21 to 24 are displaced so as to approach and separate from the guide surfaces 31 to 34, and the support shafts 113 and 123 are fixed to fix the rollers 114 and 124, that is, the sliders 21 to 24 at the current position. Therefore, the function as the position adjusting mechanism 40 can be secured. At this time, rotation and fixation of the support shafts 113 and 123 may be fixation and release with respect to the predetermined mounting holes 112 and 122 using a cap bolt or the like, and the structure can be simplified and the operation can be simplified.

[Second Embodiment]
FIG. 4 shows a second embodiment of the present invention.
The rotation transmission device 10A of the present embodiment has the same main configuration as the rotation transmission device 10 of the first embodiment (see FIGS. 1 and 2). Accordingly, the same components are denoted by the same reference numerals and redundant description is omitted, and different portions will be described below.

In FIG. 4, the rotation transmission device 10 </ b> A according to the present embodiment includes the sliders 21 to 24 similar to those of the first embodiment described above. However, in the first embodiment described above, an eccentric shaft type position adjustment mechanism 40 is installed in each. In contrast, in the present embodiment, a long hole type position adjusting mechanism 40A is installed.
Further, in the first embodiment described above, the position adjustment mechanism 40 is installed for each of the rollers 114 and 124 constituting the sliders 21 to 24, whereas in the present embodiment, a pair of opposed sliders is provided. Position adjustment mechanism 40A is installed only in one of them.

In the first embodiment described above, as shown in FIG. 3, the support shafts 113 and 123 that support the rollers 114 and 124 are eccentric shafts composed of the fixed shaft portion 41 and the hub portion 42. In the embodiment, the support shafts 113A and 123A for supporting the rollers 114 and 124 have a normal stepped shaft, that is, a fixed shaft portion and a hub portion formed on the same central axis. For this reason, even if the support shafts 113A and 123A are rotated, the rollers 114 and 124 are not adjusted in position.
On the other hand, in this embodiment, the mounting holes 112 and 122 of the slider 22 and the slider 24 are normal circular holes similar to the first embodiment described above, but the mounting holes 112A and 122A of the slider 21 and the slider 23 are long holes. It is said that. The major axis direction of the long hole is a direction toward the opposing slider 22 in the slider 21 and a direction toward the opposing slider 24 in the slider 23.

Accordingly, in the slider 22 and the slider 24, the positions of the rollers 114 and 124 fixed to the mounting holes 112 and 122 cannot be adjusted, but in the slider 21 and the slider 23, the support shafts 113A and 123A are installed in the mounting holes 112A and 122A. Is moved along the direction of the long hole and fixed at a predetermined position, so that the positions of the rollers 114 and 124 can be adjusted.
These mounting holes 112A and 122A and support shafts 113A and 123A constitute the position adjusting mechanism 40A only on the sliders 21 and 23 that are opposed to each other.

Also in this embodiment, the gap between the sliders 21 to 24 and the guide surfaces 31 to 34 constituting the slide mechanisms 14 and 15 is substantially eliminated by adjusting the position adjustment mechanism 40A in the assembly. And backlash of rotation transmission can be avoided.
An Oldham type transmission mechanism can be constituted by the first and second slide mechanisms 14 and 15, and according to the rotation transmission device 10A of the present embodiment, the rotation transmission device 10 of the first embodiment described above. The effect as described can be obtained.

[Third Embodiment]
FIG. 5 shows a third embodiment of the present invention.
The rotation transmission device 10B of the present embodiment is common in the rotation transmission device 10 (see FIGS. 1 and 2) of the first embodiment described above. Accordingly, the same components are denoted by the same reference numerals and redundant description is omitted, and different portions will be described below.

In FIG. 5, the rotation transmission device 10B of the present embodiment has the sliders 21 to 24 similar to those of the first embodiment described above, but in the first embodiment described above, an eccentric shaft type position adjustment mechanism 40 is installed in each. In contrast, in this embodiment, a moving block type position adjusting mechanism 40B is installed.
Further, in the first embodiment described above, the position adjustment mechanism 40 is installed for each of the rollers 114 and 124 constituting the sliders 21 to 24, whereas in the present embodiment, a pair of opposed sliders is provided. Only one of them is provided with a position adjusting mechanism 40B.

In the first embodiment described above, as shown in FIG. 3, the support shafts 113 and 123 that support the rollers 114 and 124 are eccentric shafts composed of the fixed shaft portion 41 and the hub portion 42. In the embodiment, the support shafts 113B and 123B for supporting the rollers 114 and 124 have a normal stepped shaft, that is, a fixed shaft portion and a hub portion formed on the same central axis. For this reason, even if the support shafts 113B and 123B are rotated, the rollers 114 and 124 are not adjusted in position.
On the other hand, in the first embodiment described above, the mounting holes 112 and 122 of the sliders 21 to 24 are all directly formed in the main bodies 110 and 120 of the first member 11 or the second member 12, but in this embodiment, the slider The attachment holes 112 and 122 of the first and second members 12 and 24 are directly formed in the main bodies 110B and 120B of the first member 11 or the second member 12, but the attachment holes 112 and 122 of the sliders 21 and 23 are not directly formed.

That is, the corners of the main bodies 110B and 120B of the first member 11 or the second member 12 where the rollers 114 and 124 of the sliders 21 and 23 are installed are notched, and the moving block 43 is disposed in the portions. The mounting holes 112 and 122 of the slider 24 are formed in the moving block 43.
An adjustment bolt 44 for positioning is screwed into the moving block 43, and a fixing bolt 45 for connecting to the main bodies 110B and 120B is inserted.

 The adjustment bolt 44 is disposed in the direction of adjusting the position of the sliders 21 and 23, that is, in the direction toward the sliders 22 and 24 facing each other. The adjustment bolt 44 is inserted from the outside of the moving block 43 (the portion exposed as the side surfaces of the first member 11 and the second member 12 when mounted on the main bodies 110B and 120B), and is inserted while being screwed to the moving block 43. The tip is exposed from the opposite side of the moving block 43 and abuts against the inner surface of the notches of the main bodies 110 </ b> B and 120 </ b> B, so that a predetermined interval can be provided between the inner surface and the moving block 43.

  The fixing bolt 45 is arranged in a direction intersecting with the adjusting bolt 44. The fixing bolt 45 penetrates the moving block 43 and the tip is screwed into the inner surface of the cutouts of the main bodies 110B and 120B. The movable block 43 can be fixed to the main bodies 110 </ b> B and 120 </ b> B while leaving an interval defined by the adjustment bolt 44.

The rollers 114 and 124 of the sliders 21 and 23 are supported through the support shafts 113B and 123B in the mounting holes 112 and 122 of the movable block 43 whose position can be adjusted as described above. Accordingly, the position of the rollers 114 and 124 of the sliders 21 and 23 can be adjusted by moving the moving block 43 and fixing it at a predetermined position.
These main bodies 110B and 120B, the moving block 43, the adjusting bolt 44, and the fixing bolt 45 constitute the position adjusting mechanism 40B only on the sliders 21 and 23 that are opposed to each other.

Also in this embodiment, the gap between the sliders 21 to 24 and the guide surfaces 31 to 34 constituting the slide mechanisms 14 and 15 is substantially eliminated by adjusting the position adjustment mechanism 40B in the assembly. And backlash of rotation transmission can be avoided.
An Oldham type transmission mechanism can be constituted by the first and second slide mechanisms 14, 15, and according to the rotation transmission device 10B of the present embodiment, the rotation transmission device 10 of the first embodiment described above. The effect as described can be obtained.

[Fourth Embodiment]
FIG. 6 shows a fourth embodiment of the present invention.
The rotation transmission device 10C of the present embodiment has the same main configuration as that of the rotation transmission device 10 of the first embodiment described above (see FIGS. 1 and 2). Accordingly, the same components are denoted by the same reference numerals and redundant description is omitted, and different portions will be described below.

In FIG. 6, the rotation transmission device 10 </ b> C of the present embodiment includes the first member 11 and the second member 12 similar to those of the first embodiment described above.
However, in the rotation transmission device 10C of the present embodiment, the intermediate member 13C is different from the intermediate member 13 of the first embodiment described above.

In the first embodiment described above, as shown in FIGS. 1 and 2, the first and second protrusions 131 and 132 are formed on the intermediate member 13, and both side surfaces thereof are guide surfaces 31 to 34. The first and second slide mechanisms 14 and 15 are configured by contacting the sliders 21 to 24 of the first member 11 and the second member 12 from the outside.
On the other hand, in this embodiment, as shown in FIG. 6, the first and second concave grooves 133 and 134 are formed in the intermediate member 13 </ b> C, and the guide surfaces 31 </ b> C to 34 </ b> C that are opposed by the inner surface thereof are formed. The sliders 21-24 of the 1st member 11 and the 2nd member 12 are contacted to these from the inside, and the 1st and 2nd slide mechanisms 14C and 15C are constituted.

The concave groove 133 and the guide surfaces 31C and 32C formed on the first member 11 side of the intermediate member 13C are in the first sliding direction, and the concave groove 134 and the guide surface 33C and the guide surface 33C formed on the second member 12 side. Reference numeral 34C denotes a second sliding direction, and the sliding directions of the first and second sliding mechanisms 14C and 15C configured together with the sliders 21 to 24 are the same as those in the first embodiment described above.
Further, when the sliders 21 to 24 are brought into contact with the guide surfaces 31C to 34C, the position adjusting mechanism 40 substantially eliminates the gap as in the first embodiment described above.

Also in this embodiment, the gap between the sliders 21 to 24 and the guide surfaces 31C to 34C constituting the slide mechanisms 14C and 15C is substantially eliminated by adjusting the position adjusting mechanism 40 in assembling. And backlash of rotation transmission can be avoided.
An Oldham type transmission mechanism can be constituted by the first and second slide mechanisms 14C, 15C. According to the rotation transmission device 10C of the present embodiment, the rotation transmission device 10 of the first embodiment described above. The effect as described can be obtained.

[Modification]
Note that the present invention is not limited to the above-described embodiments, and modifications and the like within a range in which the object of the present invention can be achieved are included in the present invention.
For example, in each said embodiment, the sliders 21-24 using the rollers 114 and 124 are provided in the 1st member 11 and the 2nd member 12, and this is the guide surfaces 31-34 or guide surface which were provided in the intermediate members 13 and 13C. 31C to 34C are contacted, but the relationship between the guide surface and the slider may be reversed, a pair of guide surfaces are formed on the first member 11 and the second member 12, and a pair of intermediate members are provided. A slider may be contacted. Further, a guide surface is formed on the first member 11 to contact the slider on one surface of the intermediate member, and a guide surface is formed on the other surface of the intermediate member to contact the slider provided on the second member. May be.
However, if the 1st member 11 and the 2nd member 12 are made the same structure, it can be set as the 1st member 11 and the 2nd member 12 by manufacturing any one and arrange | positioning in reverse direction, and manufacturing cost Reduction or simplification of parts management can be expected.

  In the said 1st-3rd embodiment, the 1st and 2nd protruding item | line 131,132 was formed in the intermediate member 13, and the both sides | surfaces were used as the guide surfaces 31-34. Moreover, in the said 4th Embodiment, the 1st and 2nd ditch | groove 133,134 was formed in 13 C of intermediate members, and the inner surface of the both sides was used as the guide surfaces 31C-34C. However, the present invention is not limited to a structure in which a pair of opposing guide surfaces are configured using such ridges or grooves, and for example, an L-shape is formed on the surface of the first member 11, the second member 12, or the intermediate member 13. A pair of rails in cross section may be arranged in parallel, and any configuration that provides a pair of opposing guide surfaces may be used.

In each of the embodiments described above, the rollers 114 and 124 that are rolling elements are used as the sliders 21 to 24, respectively. However, the rollers 114 and 124 are not limited to a complete cylindrical shape, but may have a drum shape or a spindle shape with an expanded middle portion. There may be, and the whole may be spherical.
The rollers 114 and 124 that are rolling elements may be made of metal or synthetic resin, or may be a material having elasticity to some extent.
In each of the above embodiments, the sliders 21 to 24 are each composed of two rollers 114 and 124, but may be three or more. Further, as long as one of the opposing sliders 21 and 22 can define the sliding direction, the other may have one roller.

  In each of the above embodiments, two sets of slide mechanisms (first slide mechanisms 14 and 14C and second slide mechanisms 15 and 15C) having different directions are provided. However, the slide mechanism according to the present invention is provided in the first direction. Used in the second direction intersecting with this, another displacement mechanism (displacement mechanism by elastic deformation or the like, a rotation mechanism that can be treated as a substantially linear displacement) is used, and an Oldham-type rotation transmission device by combining these. It is good also as a structure which can be displaced in the plane direction orthogonal to a rotating shaft line, ie, a structure equivalent to this.

DESCRIPTION OF SYMBOLS 1, 2 ... Rotating member 10, 10A, 10B, 10C ... Rotation transmission device 11 ... 1st member 110,110B, 120,120B which is a support body 111,121 ... Color 112,112A, 122,122A ... Mounting hole 113, 113A, 113B, 123, 123A, 123B ... support shaft 114, 124 ... roller 12 ... second member 13, 13C as support member ... intermediate member 130 ... main body 131, 132 ... ridge 133, 134 ... groove 14 , 14C ... 1st slide mechanism 15, 15C ... 2nd slide mechanism 21-24 ... Slider 31-34, 31C-34C ... Guide surface 40, 40A, 40B ... Position adjustment mechanism 41 ... Fixed shaft part 42 ... Hub part 43 ... Moving block 44 ... Adjustment bolt 45 ... Fixing bolt

Claims (4)

A rotation transmission device that couples a pair of rotating members that rotate about the same rotation axis,
A slide mechanism displaceable in a predetermined slide direction intersecting the rotation axis;
The slide mechanism includes a pair of guide surfaces extending in the slide direction and extending along the rotation axis direction, a pair of sliders movable in the slide direction while being in contact with the guide surfaces, and a support for supporting the slider Having a body,
At least one of the pair of the slider, the guide can be adjusted in the direction of position towards the surface, and the slider adjusting position have a fixable position adjustment mechanism to the support for the support of the slider ,
The position adjustment mechanism is
A structure having an eccentric shaft that extends in the same direction as the rotation shaft and can be fixed to the support at an arbitrary rotation angle, and the slider is supported by the eccentric shaft;
A structure having a long hole formed in the support body and extending in a direction toward the guide surface, and a support shaft that supports the slider and can be fixed at a predetermined position along the long hole;
A structure having a moving block that supports the slider and is movable in a direction toward the guide surface, and a fixing bolt that can fix the moving block to the support.
A rotation transmission device characterized by being any one of the above . In the rotation transmission device according to claim 1,
Two sets of the slide mechanisms are arranged such that the slide directions are crossing each other. In the rotation transmission device according to claim 1 or 2,
Each of the sliders has rolling elements that roll on the guide surface,
In at least one of the pair of sliders, a plurality of rolling elements are arranged in the sliding direction, and the rotation transmission device is characterized in that In the rotation transmission device according to any one of claims 1 to 3,
The pair of guide surfaces are formed on both side surfaces of a ridge extending in the sliding direction,
The pair of sliders are arranged to face each other so as to sandwich the ridges from both sides.

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